UserAccount 的 email 和 mobile 是 unique, 因此未设置时只能为 null

account/account-service/src/main/java/cn/reghao/tnb/account/app/service/impl/AccountRegistryServiceImpl.java

@@ -58,8 +58,8 @@ public class AccountRegistryServiceImpl implements AccountRegistryService {
             return Result.fail("短信验证码不正确, 请重新获取");
         }
 
-        String email = "";
-        String mobile = "";
+        String email = null;
+        String mobile = null;
         if (StringRegexp.matchEmail(principal)) {
             email = principal;
         } else if (StringRegexp.matchMobile(principal)) {
@@ -96,8 +96,8 @@ public class AccountRegistryServiceImpl implements AccountRegistryService {
 
     @Override
     public AccountDetail createAccount(String principal, String password) {
-        String email = "";
-        String mobile = "";
+        String email = null;
+        String mobile = null;
         if (StringRegexp.matchEmail(principal)) {
             email = principal;
         } else if (StringRegexp.matchMobile(principal)) {